Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.utils / src / org / simantics / utils / bytes / LELong.java

diff --git a/bundles/org.simantics.utils/src/org/simantics/utils/bytes/LELong.java b/bundles/org.simantics.utils/src/org/simantics/utils/bytes/LELong.java
new file mode 100644 (file)
index 0000000..7dcf96f
--- /dev/null
+++ b/bundles/org.simantics.utils/src/org/simantics/utils/bytes/LELong.java
@@ -0,0 +1,138 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007- VTT Technical Research Centre of Finland.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+/*\r
+ * Created on Jan 21, 2005\r
+ * \r
+ * Copyright Toni Kalajainen\r
+ * \r
+ * Licensed under the Apache License, Version 2.0 (the "License");\r
+ * you may not use this file except in compliance with the License.\r
+ * You may obtain a copy of the License at\r
+ *\r
+ *     http://www.apache.org/licenses/LICENSE-2.0\r
+ *\r
+ * Unless required by applicable law or agreed to in writing, software\r
+ * distributed under the License is distributed on an "AS IS" BASIS,\r
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
+ * See the License for the specific language governing permissions and\r
+ * limitations under the License.\r
+ */\r
+package org.simantics.utils.bytes;\r
+\r
+/**\r
+ * Little Endian long <-> byte array conversions\r
+ * Intel order\r
+ *\r
+ * @author Toni Kalajainen\r
+ */\r
+public class LELong {\r
+\r
+        /**\r
+         * Convert long to byte array\r
+         * @param value long value\r
+         * @return byte array\r
+         */\r
+        public static byte[] toBytes(long value)\r
+        {\r
+                byte array[] = new byte[8];\r
+                array[7] = (byte) (value & 0xff);\r
+                array[6] = (byte) ((value >> 8) & 0xff);\r
+                array[5] = (byte) ((value >> 16) & 0xff);\r
+                array[4] = (byte) ((value >> 24) & 0xff);\r
+                array[3] = (byte) ((value >> 32) & 0xff);\r
+                array[2] = (byte) ((value >> 40) & 0xff);\r
+                array[1] = (byte) ((value >> 48) & 0xff);\r
+                array[0] = (byte) ((value >> 56) & 0xff);\r
+                return array;\r
+        }\r
+\r
+        /**\r
+         * Write long value to byte array\r
+         * @param value the long value\r
+         * @param array the byte array\r
+         * @param offset the offset\r
+         */\r
+        public static void write(long value, byte array[], int offset)\r
+        {\r
+                if (offset+8>array.length)\r
+                        throw new IndexOutOfBoundsException();\r
+                array[7 + offset] = (byte) (value & 0xff);\r
+                array[6 + offset] = (byte) (value >> 8);\r
+                array[5 + offset] = (byte) (value >> 16);\r
+                array[4 + offset] = (byte) (value >> 24);\r
+                array[3 + offset] = (byte) (value >> 32);\r
+                array[2 + offset] = (byte) (value >> 40);\r
+                array[1 + offset] = (byte) (value >> 48);\r
+                array[0 + offset] = (byte) (value >> 56);\r
+        }\r
+\r
+        /**\r
+         * Write long value to byte array\r
+         * @param value the long value\r
+         * @param array the byte array\r
+         */\r
+        public static void write(long value, byte array[])\r
+        {\r
+                if (array.length<8)\r
+                        throw new IndexOutOfBoundsException();\r
+                array[7] = (byte) (value & 0xff);\r
+                array[6] = (byte) (value >> 8);\r
+                array[5] = (byte) (value >> 16);\r
+                array[4] = (byte) (value >> 24);\r
+                array[3] = (byte) (value >> 32);\r
+                array[2] = (byte) (value >> 40);\r
+                array[1] = (byte) (value >> 48);\r
+                array[0] = (byte) (value >> 56);\r
+        }\r
+        \r
+        /**\r
+         * read long value from byte array\r
+         * @param array the array\r
+         * @param offset offset\r
+         * @return the value\r
+         */\r
+        public static long toLong(byte array[], int offset)\r
+        {\r
+                if (offset+8>array.length)\r
+                        throw new IndexOutOfBoundsException();\r
+                long value =\r
+                        ( ((long) array[7 + offset] & 0xFF) ) |\r
+                        ( ((long) array[6 + offset] & 0xFF) << 8) |\r
+                        ( ((long) array[5 + offset] & 0xFF) << 16) |\r
+                        ( ((long) array[4 + offset] & 0xFF) << 24) |\r
+                        ( ((long) array[3 + offset] & 0xFF) << 32) |\r
+                        ( ((long) array[2 + offset] & 0xFF) << 40) |\r
+                        ( ((long) array[1 + offset] & 0xFF) << 48) |\r
+                        ( ((long) array[0 + offset] & 0xFF) << 56);\r
+                return value;\r
+        }\r
+\r
+        /**\r
+         * read long value from byte array\r
+         * @param array the array\r
+         * @return the value\r
+         */\r
+        public static long toLong(byte array[])\r
+        {\r
+                if (8>array.length)\r
+                        throw new IndexOutOfBoundsException();\r
+                long value =\r
+                        ( ((long) array[7] & 0xFF) ) |\r
+                        ( ((long) array[6] & 0xFF) << 8) |\r
+                        ( ((long) array[5] & 0xFF) << 16) |\r
+                        ( ((long) array[4] & 0xFF) << 24) |\r
+                        ( ((long) array[3] & 0xFF) << 32) |\r
+                        ( ((long) array[2] & 0xFF) << 40) |\r
+                        ( ((long) array[1] & 0xFF) << 48) |\r
+                        ( ((long) array[0] & 0xFF) << 56);\r
+                return value;\r
+        }\r
+}\r